若x-y=5,-xy=3,求(7x+4x+xy)-6(5/6y+x-xy)
x-y=3,xy=5,求代数式(7xy+4x-7y)+(6x-3xy)-(3y+4xy)的值
若x-y=5,-xy=3,求(7x+4y+xy)-6(5/6y+x-xy)
若x-y=5,-xy=3,求(7x+4y+xy)-6(5/6y+x-xy)的值
已知X+Y=6,xy=3求代数式(5XY+4X+7Y)+(6X-3XY)-(4XY-3Y)的值
已知x+y=3,xy=1,求代数式5xy+4x+7y+6x-3xy-4xy+3y的值.
x+y=8,xy=-2,求(5xy+4x+7y)+(6x-3xy)-(4xy-3y)的值
已知x+xy=-2,xy-y=-6求代数式2x{-4y-3[(x+xy)²+x]-½[(y-xy
若x-y=5,-xy=3,求(7x+4y+xy)-6(5/6·y+x-xy)的值
已知x+4y=-1.xy=5,求(6xy+7y)+((8x-(5xy-y+6x))
已知x+4y=-1,xy=5,求(6xy+7y)+【8x-(5xy-y+6x)】的值
化简求值:已知x+4y=-1,xy=5,求(6xy+7y)+【8x-(5xy-y+6x)】的值
已知x+4y=-1.xy=5,求(6xy+7y)+【(8x-(5xy-y+6x)】